Source: Adapted from C

question 36

Multiple Choice

Source: Adapted from C. A. Huether et al., Maternal age specific risk rate estimates for Down syndrome among live births in whites and other races from Ohio and Metropolitan Atlanta, 1970-1989, Journal of Medical Genetics 35: 482-90 (1998) . Figure 8.20B Maternal age and incidence of Down syndrome
-You see a cell with several nuclei and you know that something is different about cell division. What is the most likely explanation?

• A) failure of cytokinesis following mitosis
• B) failure of sister chromatids to separate
• C) nondisjunction
• D) failure of homologous chromosomes to separate

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Definitions:

Magma

Molten rock beneath the earth's surface, which can form igneous rocks upon cooling and may fuel volcanic eruptions.

Crater

A bowl-shaped geological formation at the top of a volcano or an impact crater formed by the collision of a meteorite.

Volcanic Ash

Fine particles of rock, minerals, and volcanic glass created during volcanic eruptions and dispersed in the air.

Solidified Lava

Lava that has cooled and hardened, transitioning from a molten state to a solid rock form.